Just for effects...

[itsid]

...& there's the where it gets interesting; is the button separate from the igniter itself?

there are two different types that I know, one basically everything is just a small box...
but there's a metal tip you can solder a wire to.

the other one, just as Doug said has a wire already attached,
you can just make said wire longer.

The actual piezo crystal is at the button, but it doesn't matter the 20-40k Volt can travel a fair amount of wire and still keep you alert when it hits you

Best bet:
those looong bendable candle lighters, they must come with a wire already attached.

I think I have both types somewhere in a drawer to goof around with...
I'll see if I can find them
[EDIT]

so here we go:


the left one has a small cable (oh whaddya say)
never mind the plastic part on the end it's just to line up the wire with the gas nozzle.
and the right one just a metal tab.. the small copper piece just sits on top
barely touching the metal plate and it still works great

'sid

 

[firemanjim]

This may sound dumb, but, why not just add a spark plug to the exhaust. Add a piece of wire from engine plug to exhaust plug, through a toggle switch. The coils power would be split between the two plugs. This would cause a smaller spark in the engine, producing more gas fumes to be lit by the second plug. The velocity of the exhaust fumes will not blowout the flame. I have had that flame thrower kit on a vw powered sandrail with a stinger exhaust. It would blow flames at least 5-6 feet away. Starts with a short flame, but when you apply some throttle action, the flame grows in length. TOO cool...... The black box hooks to ignition, and if I remember right, grounds out a plug to allow excess fuel fumes to build up, then ignite from the exhaust plug. No harm, no foul, but no cat converters either.
I'm thinking just adding a plug and some wire with a switch will probably be easiest, most effective way to get the flames you want.....

 

[Half-breeder]

Well... I did some homework on the subject of throwing flames... and I have come to the conclusion that I will be using propane w/ NOS fittings.

The basic idea(in my head) is take an inlet jet and mount into muffler bout halfway down. Bout 2"-3" up, towards the end, Id mount the igniter. Ive watched alotta youtube vids, on the subject(exhaust flame thrower), and come to the conclusion, propane is the way to go. Id have the tank clamped to the side... from there it would have a regulator going to a valve(like on a gas grill) to turn on/off/variable... next to the valve would be the push button igniter.

Not using the motor as the fuel source(dumping fuel down a cylinder... and possibly washing away lubricants is probably not too healthy for the walls/rings... seeing as that they 'just' met)... but as a propellant only. The kits they sell to 'plug n blaze' the original method... they use a relay that turns off the/a spark plug(s) from firing briefly(uses the motors rev'd rpms to keep the motor going) which dumps raw fuel into the cylinder... No fire = no rpm gain = shorter flames(unless I dump a large amount of fuel... but I already came to the conclusion thats not good, plus dont think the motor would have enough momentum to keep going if held out too long for a large flame).

Also by using propane...

A- I dont endanger any internal motor issue(s).
B- more 'variable' n controllable.
C- by using a NOS bottle... I can perpetrate the use of nitrous(not like it dont go fast enough).
D- more of a dramatic effect(larger flames... for a single cylinder motor... WHILE driving).

... Im not 100% on the igniter, yet. Itll either be a spark plug/coil setup(12 volt application) or the igniter off a grill(AAA battery operated), not sure the flammability of propane mixed w/ exhaust... 'may' need to louver afew vents between the inlet n igniter for sufficient Oxygen.

 

[builder bob]

Misting methanol into the exhaust should ignite if your muffler isn't too long. You could also run low percentage nitro (you can sometimes get it as low as 5%) and run that in the engine when you want flames. It wouldn't really shoot flames but there would be a large Bunsen burner like flame. The speed the engine will kick up if you do this and may destroy it (most engines designed for nitro idle at 6,000+ rpm, a good engine with a flywheel and load will hit 45,000) so you'd probably only want to do it with the engine idling and first test it on an engine you don't care about.

 

[firemanjim]

WARNING when im on my laptop, my writing aint so good....
Tihm, using a second plug and splitting the power, youre only making the engine run lean. no long term ill effects. im not sure i like the idea of plumming propane into my kart engine. im gonna investigate my theory this weekend , with video now that my laptop is fixed.

 

[Half-breeder]

... im not sure i like the idea of plumming propane into my kart engine. im gonna investigate my theory this weekend , with video now that my laptop is fixed.

Technically not pumping propane into the motor... just at the end tip chamber...if anything.

Picture farting into a tube, through a hole in the side. The tube has a current of air moving through it already. Now picture that tube, you farted into, closing to half its diameter at the exit end, due to a baffle, there will be a consistently more rapid flow of moving air exiting, than traveling through the tube(bottleneck effect)... smaller chance of backingup into the case/head/block).